Online PHP editor | output for HtMo3

@ 2018-09-10T13:06:56Z

<?php
/* what I want to achieve*/
$rules= [
    'title' => 'required|min:2|max:5',
    ];
///////////////////////////////////////////    
    
$types = ['min' => 2, 'max' => 5, 'required'=> 1]; 

function noValue(array $types):? string{
    foreach($types as $key=>$value) {
        if($key === 'required' ||$value > 0){
            return 'required';
        }
    }
    return null;
}

function ruleTypes(array $types){
    $arr = [];
    foreach($types as $key => $value) {
          $arr[] = noValue($types) ? $key . ':' . $value : 'hello';
    }

    return implode('|', $arr);
}

$arrayOfRules = [
    'title' => ruleTypes($types),
    ];


var_dump($arrayOfRules);

Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: array(1) { ["title"]=> string(22) "min:2|max:5|required:1" }
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 array(1) { ["title"]=> string(22) "min:2|max:5|required:1" }
Output for 7.0.0 - 7.0.33: Parse error: syntax error, unexpected '?' in /in/HtMo3 on line 10
Process exited with code 255.
Output for 5.6.0 - 5.6.40: Parse error: syntax error, unexpected ':', expecting '{' in /in/HtMo3 on line 10
Process exited with code 255.

preferences:dark modelive preview